Deformation-mechanism maps represent an invaluable guide to predicting the optimum processing conditions for a material. They are also useful in matching a material to a given engineering application. The present book summarizes recent research results in the field. The book references 106 original resources and includes their direct web link for in-depth reading. Keywords: Deformation-Mechanism Maps, Metals, Engineering Applications, Dislocation Glide, Diffusional Flow, Dislocation Creep, Plastic Flow, Strain Rate, Atomic Bonding, Aluminium, Cadmium, Cobalt, Copper, Iron, Lead, Magnesium, Nickel, Potassium, Silver, Tin, Thallium, Titanium, Tungsten, Zinc, Zirconium.